File Upload Field in ManyManyComplexTableField popup

I'm trying to add a group of text fields plus some file fields to a ManyManyComplexTableField.
From what I can fathom, I've done the logcal thing (to me), but it fails.
I can get the upload brows boxes to show, but it doesn't upload.

Hmm, must be a problem in your code, as FileIFrameField has always worked fine in a popup. I havn't used a complex table field in quite a while, I only ever use the DataObjectmanager thesedays but I can't think of any reason it would have stopped working.

I would give ti another go, and if it still doesnt work, post ur code and I'll take a look :)